Improvement in hydraulic presses



J. A. DBSGOPFB. HYDRAULIG PRESS.

No.11 0,346. i Patented Deo. 20, 1870.

iuited States @sind @twice Letters Patent No. 1-10,346,`dated December 20, 1870; antedated December 9,v 1870.

IMPROVEMENT m HYDRAULIC PREssE's.

The Schedule referred to ln these Letten Patent andmaklng part of the same.

To all whom it may concern.-

certain new and useful Improvements in Hydraulic- Presses, of which the following is a' full, clear, and exact description, reference being had to the accompanying drawing forming part of' this specification, and in which- Figure 1 represents a sectional elevation of a press constructed in accordance with my invention, and

Figure 2, a sectional plan of the same, taken as indicated by the line a: z iu lig. 1.

Similar letters of reference indicate corresponding parts.

My invention relates to presses applicable to conipressing purposes generally, whether for the mere reduction of' bulk in the article under pressure or for the extraction of juice or liquid therefrom.

The invent-ion commises a ram arranged at the one end of the press operated, through the intervention of i a fluid, hy-a plunger of smaller diameter than the ram,

and which is actuated iu a slow or powerful manner by a screw. 1

The invention furthermore embraces,in combination with the elements just recited, au additional screw and follower arranged to f'acc thc ram ofthe press, and so that said'- mm is made to form the bed on which the article to be pressed is carried, for action on it first by .thefhllower and subsequently by the ram.

Referring to the accompanying drawing- A represents the base of the press, onwhichv are mounted columns, B B, that support an entablature,

D is a. cylindrical chamber made in the base A, and provided with an upper stutng-box, E, and packing, to receive within and through it a ram, F, having au upper bed surface, G, which is guided in its up-anddown travel by the columns B B.

Said ram is raised by hydraulic pressure through means of a small horizontal plunger, H, arranged to play through a branch cylindrical chamber, I, in communication with the ram-cylinder D below the piston,` and fitted with a suit-ablestilfling-box at its outer end.

'lhese cylinders D'and I are filled with water or any other suitable fluid; andthe small plunger'H is` made hollow and constructed to form a screw-bux for au operating-screw, J, to play in, for the purpose of' actu ating the 1am F up or down according to the direction in which the screw J is turned.

i By means of the screw J and small plunger H a powerful action is secured to the ram and the operating tluid inthe cylinders D and I remains permanent within them. 1

K is an auxiliary screw arranged to work through the entablature O, and carrying at itsl lower end a platen, Il, between which and the bed G of the rain the substance to be pressed lies.

lVhen the press is used for expressing essences, juices, or other liquid, from the material under pressure, then the platen L is made to play in a perforated cylindcnhl, placed upon the bed G and .surrounded by an outer cylinder, N, leaving an annular spacebetween it and the inner perforated cylinder M, 'and provided with outlets b, near its bottom, for the expressed liquid to run off into a channel, c, in the bed G, which is furnished with a spout for carrying off said liquid.

lIn the operation of' the press the platen L may first be lowered to produce a given pressure ou the substance within the cylinder M or on the bed G. This constitutes a quick action'of the press, an-.l after a certain pressure has been thus obtained, then the ram Fv is operated by the screw J and small plunger H' to give a powerful lifting action or heavy pressing force of the bed G onthc substance lying betweenit and the platen L. y n

In some cases both forces, namely, that of thc ram and platen, may be applied simultaneously.

The arrangement ofthe small plunger H and its operating screw J on one side of the press, and relatively to' the auxiliary screw K, Iwith its platen L, affords every convenience for working the press.

What is here claimed, and desired to be secured by Letters Patent, is F l. The combination of the screw J and hollow plunger H with the ram F and cylinders D I, substantially as specified.

2. The combination, with the elements recited in the previous claim, of the platen L and auxiliary screw K, essentially as herein set forth..

3. The arrangement, relatively to each other, of the plunger H and its operating screw J, the ram F with its bed G, and plat-en L with itsoperating screw K,

substantially as shown and described.

JULES AUGUSTE DESGOFFE.- [n s.].

Witnesses:

J. U. ZUs'r, GH. F. THIRION. 

